src/Utils/Decimal.php

@@ -15,22 +15,17 @@ use Illuminate\Support\Arr;
 class Decimal
 {
     protected $source;
-    protected $dp;
-
-    // Rounds away from zero.
+    protected $dp = 20;
     const ROUND_UP = 0;
-    // Rounds towards zero.
     const ROUND_DOWN = 1;
 
-    function __construct($v, int $dp = 8)
+    function __construct($v)
     {
         if (!$this->isNumeric($v)) {
             throw new \Exception("value type must be int|float|string|Decimal.");
         }
 
-        $this->dp = $dp;
-        $val = $v instanceof Decimal ? $v->getSource() : $v;
-        $this->source = bcadd($val, "0", $dp);
+        $this->source = ($v instanceof Decimal) ? $v->getSource() : bcadd($v, 0, $this->dp);
     }
 
     private function isNumeric($v)
@@ -47,7 +42,7 @@ class Decimal
     function __call($name, $arguments)
     {
         $methods = ['add', 'sub', 'mul', 'div'];
-        if (in_array($name, $methods)) {
+        if (Arr::has($methods, $name)) {
             $method = "bc$name";
             $v = new Decimal($arguments[0]);
             return new Decimal($method($this->source, $v->getSource()));
@@ -56,19 +51,9 @@ class Decimal
         throw new \Exception("method $name not found.");
     }
 
-    function __toString(): string
-    {
-        return $this->source;
-    }
-
     function equals($v): bool
     {
-        return (new Decimal($v))->getSource() == new Decimal($this->source);
-    }
-
-    function toDecimalPlaces(int $dp, int $rm = self::ROUND_UP): Decimal
-    {
-        return new Decimal($this->toFixed($dp, $rm), $dp);
+        return (new Decimal($v))->getSource() == $this->source;
     }
 
     function toFixed(int $dp, int $rm = self::ROUND_UP): string